Casting machine



Aug. 29, 1933. A. vYN 1,924,221

CASTING MACHINE Filed May 10, 1932 2 Sheets-Sheet l Elma/rm 3/ Jr erzdV572 (M mi/war,

Aug. 29, 1933. A. VYN 1,924,221

CASTING MACHINE Filed May 10, 1932 2 Sheets-Sheet 2 WIIIIIIIIFIIIIII Q-um 26 l 76 i /Z 14 4 w Patented Aug. 29, 1933 l s I 1,924,221 7 'CASTINGmo 's Arend Vyn, Grand llavem Mich. Application May 10, 1932. Serial No.610,515

2 Claims. (oi. 22-73)" I I v This invention aims to provide a simple buteffective means, whereby, through the instrumentality of water flowingthrough a faucet, suction may be created to facilitate castingoperations, such as are resorted to in the art of dentistry. Theinvention aims, further, to providenovel means for controlling the flowof the water whereby the suction is brought about. i

It is within the province ofthe disclosure to improve generally and toenhance the utility of devices of that type to which theinventionappertains.

With the above and other objects in view, which will appear as thedescription proceeds, the .invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made withinthescope of what is claimed,- without departing from the spirit of theinvention.

In'the accompanying drawings: Fig. 1 shows in vertical longitudinalsection,

a device constructed in accordance with the invention, parts beingbroken away, and parts being in section;

Fig. 2 is atop plan wherein parts are broken away;

Fig. 3 is a transverse section wherein parts are in elevation, portionsbeing broken away;

Fig. 4 is a vertical transverse section taken through the valves whichcontrol the suction;

Fig. 5 is a horizontal section taken through the lower part of thatportion of the device which appears in Fig. 4.

In the drawings, there is shown a fluid-pressure valve under the controlof an operator, such as a water faucet, including a body 1 having adownwardly extended spout 2, a tubular extension 3 being connected tothe spout by a pin and bayonet slot lock 4, or in any other suitableway. The primary function of the extension 3 is to prevent splashing, ifwater is used as the actuating fluid. The employment of compressed airto create suction is within .the contemplation and spirit of theinvention. The body 1 of the faucet has lateral projections 5, suppliedwith downwardly tapered bores 6. The lateral projections 5 of the body 1are provided with side passages 7 communicating at their outer ends withthe bores 6, and communicating at their inner ends with a circulartransverse chamber 8 that is formed in the body 1.

The bore of the body 1 is contracted, adjacent to the spout 2, as shownat 9, to form a reduced throat'lo, and from this throat 10, a flaredbore 14 extends. backwardly tothe chamber 8. Within the body 1 is formeda tapered nozzle 11 which projects across the chamber 8, and through therearwardly'fiared bore 14 to the reduced throat 10, as Fig. 5 willshow.v The conduit 12 of the nozzle ll is forwardly tapered. H i

' The rear end of the tapered conduit 12 of the nozzle 11 communicates,with a valve chamber 15 in the body 1. At the lower end of the chamber15, a valve seat 16 is formed in the body .-1.- The passage throughwhich water enters the faucet .is marked by thenumeral 17 and isprolonged downwardly, as shown at 1 8, and upwardly through the valveseat 16, so as to communicate with the chamber 15. A valve 19 closesdownwardly, on the seat 16 and is carried by a stem 20 having a handle21. of any desired construction, the valve stem being threaded at 22into the body 1, for quick movement. The stem 20 passes through theusual gland 23 on the body 1. Many of the parts referred to are portionsof a common and wellknown faucet construction, and it is to beunderstood that the novel portions of the de-- vice are to be used inconnection with any kind of a faucet adapted for the end in view.

Tapered suction controlling valves 24 are mounted to turn in the taperedbores 6 of the projections 5 and are held therein byscrews 25 at theylower ends of the valves. These screws 25 also close the lower ends oflongitudinal bores 26 in the valves 24, the bores 26 terminating attheir upper ends within the valves, as Fig. 4 will show. The valves 24have side ports 27, communicating with grooves 28 which extendcircumferentially of the valves, on their outer surfaces,

a little less than, or about half way around the.

length, are. mounted in the upper ends of the I valves 24, and projectlaterally'therefrom, the

arms 29 being in communication with the longitudinal bores 26 'of' thevalves. On the outer ends of thearms 29 are mounted the stems 30 ofhorizontal supports 31, the supports having u'p-' standing rims 32. Thestems 30 of the supports 31 are provided with vertical passages 33,comarms 29. On the 'upper'surfaces of'the supports ,7 31, there areconcentric annual grooves 34, con-- nected with each other by radialgrooves 35, the r innermost of the circumferential grooves '34municating at their lower ends with the tubular being connected in thesame manner with the upper end of the passage 33.

In practical operation, the arms 29 may be disposed at right angles tothe length of the faucet body 1, although the position assumed by thearms depends on'the length of the groove 28,

'due regard being had to the convenience of the operator. This bringsthe circumferential grooves 28 of the valves 24 in communication withthe passages 7 in the'body of the faucet.

When the water valve 19 is open, the water flows through the. passage 17and the part 18 thereof, into the chamber 15, and out of the chamber 15through the conduit 12 of. the nozzle 11, into the spout 2 and out ofthe extension 3 of the spout. v

The water, as it leaves the conduit 12 of the nozzle 11, creates suctionin the chamber 8, and

this suction is communicated by way -of the passages 7, the ports 27,the bores 26, the tubular arms 29, and the passages 33, to. the grooves34 1 'onlthe supports 31.

34 is communicated to the casting rings (not.

The suction in'the grooves shown) that are mounted on the supports 31.

In the making of castings of the sort used by dentists, a wax model ismade of the thing which is to be cast. This model ismountecl on acrucible former, by means of a 'WlIB leading. from the wax model to thecrucible former. A ring is placed on the crucible former and filled withan investment material, comprising plaster of paris as'a base.

heated until the wax model is entirely eliminated by being melted orburned out. The ring isth'en placed on the support 31.

the. water is turned on in the faucet, a vacuum is created which drawsthe air through the investment material and carries the gold down intothe mold, thus producing a duplicate of the After the investmentmaterial has set, the crucible former and the wire sprue con necting thecrucible former and the wax model "are removed.

The casting ring is then placed on the fire and- The gold or other metalis put into the crucible and melted. Whenoriginalwax model. Theforegoing explanation relates to the casting operation, considered assuch, and need not be illustrated in the drawings.

The supports 31 are of different diameters, in order to accommodatecasting rings of vdifferent sizes.

When the occasion for the use of the device has passed, the arms 29 maybe swung back more or less, toward parallelism with the body 1.Thisoperation rotates the suction controlling valves 7 duit,'means forcontrolling the flow of'liquid through the liquid conduit, a valvejournaled in the faucet and interposed in the suction conduit, the valvehaving a substantially rigid lateral handle, and a mold carrier mountedonthe handle, the mold carrier having an orifice whereby suction may beapplied to a mold on the carrier, the suction conduit being continuedthrough the handle, to the orifice of the moldcarrier, the valvecontrolling the suction conduit when the valve is operated by means onthe handle.

' *2. A casting machine constructed as set forth in claim 1, and furthercharacterized by the fact,

'that'the valve turns about a substantially vertical axis, thehandlebeing disposed substantially at right angles to said axis, andhorizontally, and the mold carrier being'disposed-in'a substantiallyhorizontal position, so that the mold may remain in place on the moldcarrier whilst the handle is being operated to open or to close thevalve.

AREND WN.

